The Hongshijing gold ore deposit, which occurs in volcanic rocks and pyroclastic rocks of the Middle and Late Carboniferous, is of the brittle-ductile shear zone type controlled by a rift belt. The main orebody was o-riginally considered to dip south, so drill holes over the south, middle and east parts of the orebody did not find the orebody. Therefore, only 0. 947 tons of gold reserves were obtained. Based on studies of geologic structure, spatial distribution of orebody, thermal and electric properties of minerals and electromagnetic sounding, the authors predicted that the main orebody is arcuate in shape, extends westwards and dips northwards on the whole. Its WSW part plunges while the NEE part rises. As a results, drill holes over the northern, central and western segments of the main orebody have encountered the orebody, yielding gold reserves of over 10 tons.